NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days
T-MOBILE USA, INC. 76
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedBlockAssigneeOCNRate centerState
2023-03-17 572-216-9XXX T-MOBILE USA, INC. 6529 CHANDLER OK
2023-03-16 681-655-4XXX T-MOBILE USA, INC. 6529 CHRLSTNZN7 WV
2023-03-10 316-900-6XXX T-MOBILE USA, INC. 6529 CHENEY KS
2023-03-10 316-900-7XXX T-MOBILE USA, INC. 6529 CHENEY KS
2023-03-08 650-404-6XXX T-MOBILE USA, INC. 6529 MT VIEW CA
2023-03-08 650-705-5XXX T-MOBILE USA, INC. 6529 MT VIEW CA
2023-03-08 650-943-8XXX T-MOBILE USA, INC. 6529 MT VIEW CA
2023-03-07 859-438-8XXX T-MOBILE USA, INC. 6529 COVINGTON KY
2023-03-07 937-941-3XXX T-MOBILE USA, INC. 6529 NEWCARLISL OH
2023-02-27 573-650-2XXX T-MOBILE USA, INC. 6529 POTOSI MO
2023-02-27 573-650-3XXX T-MOBILE USA, INC. 6529 POTOSI MO
2023-02-27 573-650-7XXX T-MOBILE USA, INC. 6529 POTOSI MO
2023-02-24 870-806-2XXX T-MOBILE USA, INC. 6529 BATESVILLE AR
2023-02-15 341-218-0XXX T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2023-02-03 479-492-7XXX T-MOBILE USA, INC. 6529 GREENWOOD AR
2023-02-03 479-492-8XXX T-MOBILE USA, INC. 6529 GREENWOOD AR
2023-02-03 479-492-9XXX T-MOBILE USA, INC. 6529 GREENWOOD AR
2023-02-03 501-409-5XXX T-MOBILE USA, INC. 6529 BENTON AR
2023-02-03 501-946-1XXX T-MOBILE USA, INC. 6529 BENTON AR
2023-02-02 319-508-1XXX T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2023-02-02 319-508-2XXX T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2023-02-02 319-508-3XXX T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2023-02-02 319-508-4XXX T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2023-02-02 319-508-5XXX T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2023-01-31 870-902-9XXX T-MOBILE USA, INC. 6529 BLYTHEVL AR
2023-01-27 385-514-9XXX T-MOBILE USA, INC. 6529 OGDEN UT
2023-01-27 425-472-9XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2023-01-27 458-277-6XXX T-MOBILE USA, INC. 6529 NEWPORT OR
2023-01-27 564-262-8XXX T-MOBILE USA, INC. 6529 LONGVIEW WA
2023-01-27 626-681-9XXX T-MOBILE USA, INC. 6529 EL MONTE CA
2023-01-26 213-676-0XXX T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2023-01-26 213-676-1XXX T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2023-01-26 213-676-2XXX T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2023-01-26 442-449-7XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2023-01-26 626-762-2XXX T-MOBILE USA, INC. 6529 EL MONTE CA
2023-01-26 626-762-9XXX T-MOBILE USA, INC. 6529 EL MONTE CA
2023-01-26 682-393-8XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 682-415-0XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 682-415-1XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 682-415-2XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 682-415-3XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 682-415-9XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 817-661-2XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 817-661-3XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 817-661-4XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 817-661-5XXX T-MOBILE USA, INC. 6529 WEATHERFD TX
2023-01-26 945-242-6XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-01-26 945-242-7XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-01-26 945-386-0XXX T-MOBILE USA, INC. 6529 FORNEY TX
2023-01-26 945-386-1XXX T-MOBILE USA, INC. 6529 FORNEY TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.